import java.util.Scanner;

/**
 * @author Lxh
 * @version 2022.1.2
 * @date 2022/4/30 11:48
 */


public class TestDemo01 {
/*    public static int sum(int a,int b){
        return a+b;
    }
    public static void sum1(int a1,int b1){
        System.out.println(a1+b1);
    }
    public static void main(String[] args) {

    }*/
/*    public static int add1(int a,int b){
        return a+b;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        System.out.println(add1(a,b));
    }*/
/*    public static int add(int x,int y){
        return x+y;
    }*/
    public static int add(int x,int y){
        return x+y;
    }
    public static double add(int x1,double y1){
        return x1+y1;
    }
    public static double add(double x1,int y1){
        return x1+y1;
    }
/*
    public static double add(int x1,double y1,double c1){
        return x1+y1+c1;
    }
*/

public static void main(String[] args) {
    int a = 10;
    int b = 20;
    int ret = add(a,b);
    System.out.println(ret);
}
}
